jQuery Mobile App - Fusion Tables Map click-to-call in infowindow isn't executing

Image Link of Issue - http://ift.tt/1IuWCDQ

When I open the fusion map within the safari browser on my phone and click on the number it gives me the option of calling that number, when I run it through the app however it does not.

I have put the following code in the fusion table

<a href="callto:12345678">+1 (555) 555-5555</a>

The 'tel:' function does not work either.

Thanks in advance for any help.